Single-barrelled plugging pistol provided with a pivoting gun

ABSTRACT

1,156,950. Cartridge-actuated tools. SOC. CIVILE D&#39;ETUDE DE PROCEDES DE SCELLEMENT. 9 Nov., 1966 [16 Nov., 1965], No. 50327/66. Heading B4C. A cartridge-actuated tool for driving fasteners such as nails, comprises a body 1 having a barrel divided into a front portion 3 and rear portion 6, the front portion being sealingly locked to the rear portion by means of a rotatable collar 14 and a cocking slider 23 which is prevented from cocking the tool unless the collar has been operated to lock the barrel portions together. The front portion 3 of the barrel is formed with serrations 3&lt;SP&gt;2&lt;/SP&gt; one of which is adapted to be engaged by a pin 15 in the collar so that by rotating the latter by means of a handle 14&lt;SP&gt;1&lt;/SP&gt; the front barrel portion 3 is moved into engagement with the front end face of the barrel portion 6 via a screw-thread connection. The rear barrel portion 6 is connected to a flap 4 which is pivoted on the body by means of pins 5, the flap being swung open by a lever (10, Fig. 5) in order to permit the insertion of a cartridge; the lever is also adapted to actuate an extractor sleeve 9. The cocking slider 23 is connected at its front end to a muzzle member 24 and is provided at its rear end with a pivoted sear adapted to engage with a firing pin 32; upon pressing the muzzle against a workpiece the sear engages the firing pin which is released by means of trigger 34. The slider is also provided with a pin 27&lt;SP&gt;1&lt;/SP&gt; which, unless the locking collar is in its correct position, abuts a shoulder in the collar and so prevents the tool from being cocked. A splinter guard is formed by two arcuately-shaped cups 16, 17 which may be rotated relatively to each other in order to form different splinter proof shapes.

Oct. 14, 1969 Filed NOV. 9, 1966 J. BARBIER DE COURTEIX SINGLE-BARRELLED lPLUCrGINCr PISTOL PROVIDED WITH A PIVOTING GUN 3 AShee'rss--Sheet l J. BARBIER DE coURTElx 3,472,441 SINGLE-BARRELLED PLUGGING PISTOL PROVIDED oct. 1,4, 1969 v WITH A PIVOTING GUN Filed Nov. 9, .1966 3 Sheets-Sheet 2 7 .lul

.DI I 1 MM NM Oct. 14,

J. BARBIER DE COUR-rmx 3,472,441

SINGLE-BARRELLED PLUGGING PISTOL PROVIDED WITH A PIVOTING GUN Filed Nov. 9, 1966 l 3 Sheets-Sheet 3 Egg 24 V I1 i1? ,2s\

United States Patent O Im. Cl. Bzsc 1/10 U.S. Cl. 227-11 10 Claims ABSTRACT OF THE DISCLOSURE A fastener driving tool is provided with front and rear sections of a gun structure, the rear section being pivotably secured in a casing for movement between an operative position in axial alignment with the front section and an inoperative position in which the rear section is accessible for reloading. The front section is threadably engaged with the casing and is turnable for being axially abutted with the rear section in the operative position and released therefrom in the inoperative position. A striker in the rear of the casing is controlled by a cocking slider and trigger to act on a cartridge in the rear section to expel a fastener.

'I'he present invention has for its object a single barrelled .plugging pistol or apparatus including a longitudinally open body or carcase to which is pivotally secured the rear section of the gun, so as to allow through the agency of a lever its transverse release with reference to said carcase and thereby the removal and reloading of the cartridge carrier out of said rear section.

Said rear pivoting section of the gun is held locked in its axial closed ring position by the front section of said gun which is screwed into the corresponding opening of the carcase and may be angularly shifted through the agency of a projection formed on an outer movable collar.

According to a further feature of the invention, the pistol-cocking slider cooperates through a ystud thereon with a shoulder on the movable collar so as to form safety means and to allow the cooking and firing of the pistol only when the rear section of the gun is closed and locked in position.

According to a further object of the invention, the pistol cocking slider includes two parts of which the adjacent interconnected ends engage each other so that the frontend of the slider carrying the muzzle of the gun may be held in position by the splinter shield when in its operative position, said front end of the slider being automatically disconnected from the remainder of the apparatus under the mere action of gravity as soon as the shield is dismantled, which ensures safety for the apparatus.

According to a further feature of the invention, the splinter-proof shield is constituted by two arcuate parts extending over angles the sum of which forms 360 so as to allow the shield to cope with the requirements of the work to be executed, by a relative angular shifting between said parts.

According to a still further object of the invention, a rocking safety lever located at the lower end of the carcase holds automatically the cooking slider if the pistol happens to be dropped or subjected to a shock which might otherwise shift the cocking slider and cock the pistol.

These and other further advantageous features will appear clearly from the reading of the following description, reference being made to the accompanying drawings given solely by way of example and by no means in a limiting sense. In ysaid drawings:

FIG. `1 is on a reduced scale an outer front view of ACC the single barrelled plugging pistol executed in accordance with the invention, the position illustrated being the normal position for which the rear section of the gun is held inside the carcase while the pistol is inoperative since, far from being set, it is locked against operation.

FIG. 2 is a view of the pistol as seen from outside in a direction at with reference to that in which it is seen in FIG. 1.

FIG. 3 is a general longitudinal sectional view of the plugging pistol illustrated in FIG. l.

FIG. 4 is a longitudinal sectional view through line IV-IV of FIG. 3.

FIG. 5 is an outer partly sectional view, the plugging pistol being shown in the position for which the rear section of the gun is in its open position, the extracting means being also illustrated in their open condition.

FIG. 6 is a transverse sectional view through line VI-VI of FIG. l, the rear section of the gun being shown in its closed position inside the carcase.`

FIG. 7 is a cross-sectional view through line VII- VII of FIG. 5, the rear section of the gun being shown in its open position obtained through a pivoting movement.

FIG. 8 is a cross-sectional view through line VIII-VIII of FIG. 5.

FIG. 9 is a cross-sectional view through line IX--IX of FIG. 5.

In the embodiment illustrated by way of example and by no means in a limiting sense, the single barrelled pistol or apparatus includes a body or carcass 1 provided with a handle 11, said body enclosing a cylindrical chamber 12 opening laterally and extending along the longitudinal axis of the gun which includes two sections, a front section 3 and a rear section 6. A longitudinally extending clearance 13 is formed laterally of the chamber 12 in the upper part thereof, while a bearing urface 14 is provided at the end of the chamber 12 for the adjustable fitting and securing of the front section 3 of the gun.

The clearance 13 in the body or carcass 1 acting as a strap houses the rear boss 4l on the arcuate ap 4 pivotaly secured to two alined threaded rods 5 extending longitudinally between terminal lateral projections on the axial section of said carcass 1. Said pivoting liap 4 is in the shape of a cylindrical sector matching 'the inner outline of the carcass 1, so that its inner surface forms a bearing for the rear section 6 of the cylindrical gun held in position by a screw 7 and by a radial spindle 8 to be described hereinafter.

The rear end of the rear gun section 8 is of a reduced diameter so as to show a bearing surface 161 which allows the sliding over it of the extracting ring 9, the periphery of which is Welded or otherwise secured to the abovementioned shouldered spindle -8 (FIG. 7). The latter extends freely through a longitudinal slot `42 formed in the pivoting llap 4 and the shoulder formed on said spindle ensures a fitting and a bearing for a control lever 10 which is held in position on the spindle `8 by the nut 11. The end of the lever 10 engages a slot formed in the boss 43 on the flap 4, whereby it is longitudinally held by and pivotally secured to a pin 12.

It is apparent that with the structure described the control lever 10 is adapted to release the gun section 6 through a pivotal movement of the lap 4 round the spindles 5, as illustrated in FIG. 7, so as to uncover the rear frusto-conical recess 62 in the gun section 6 housing the cartridge carrier T and the corresponding missile 13 constituted for instance by a nail. On the other hand and furthermore the control lever 10 allows, through a pivotal movement in the direction of the arrow F of FIG. 5, a rearward sliding of the extracting ring 9 rigid with the spindle 8 and consequently a removal of the cartridge carrier T after the missile has been fired. To this end, it should be remarked that the .rear end of the rear section of the gun shows a squared recess or clearance 63 engaged by the corresponding head 91 Of the extractor ring 9. Said head 91 is provided with a shouldered groove 92 housing partly the bead at the rear end of the cartridge carrier 6, which allows after firing the removing of said cartridge as soon as the extracting ring 9 has receded.

It should also be remarked that the extraction or removal of the cartridge carrier is rendered possible only when the rear gun section 6 is raised into its position of complete release. On the other hand, the longitudinal guiding of the extractor ring 9 with reference to the rear gun section 6 is ensured by a stud 13 secured to the Said rear gun section 6 and projecting beyond the latter so as to engage a longitudinal groove 93 in the ring 9.

To the front of the pistol, the carcass 1 carries on its outer bearing surface a collar 14 provided with a control lever 141 providing for its rotation `over a limited angle, whereas said collar 14 carries inwardly a radial projection 15 extending towards the bearing surface 15 on the carcass. Said projection 15 passes through one 0f the openings 16 in the carcass 1 which provides for exhaust of the thrust-producing gases, the shaped end 151 of said projection reaching the front section 3 of the gun which is screwed over the front portion of the carcass 1 of the pistol. To this end, the front gun section 3 shows a peripheral bearing surface 31 in which are cut longitudinal corrugations 32 which are adapted to be engaged by the shaped inner end 151 of the projection 15.

It is apparent that the angular shifting of the collar 14 produces directly a rotation of the front section 3 of the gun and ensures thus its axial shifting as a consequence of the screwing or unscrewing of its threaded part 33 in the carcass 1.

Thus, the axial shifting of the front gun section 3 allows either locking without any possible back lash said section in contact with the front end of the cooperating rear section 6, or else, after an angular movement of the collar 14 in the opposite direction, releasing said rear section 6 which can thenafter rock freely into its released position as disclosed hereinabove.

It should also be mentioned that the plurality of corrugations 32 in the front gun section 3 allows a very large number of accurate adjustment combinations adapted to ensure a highly eiicient and fluidtight bearing for the end of the front gun section 3, on the rear section 6.

Furthermore, the rotary movement of the collar 4 extends over a well-defined sector limited by the angular extent of the openings 15 formed laterally in the peripheral bearing surface 15 of the carcass 1.

The splinter-proof shield includes a iirst member 16 provided with a recessed bearing section 161 furthering the assembly of said member 16 over the outer bearing surface 15 on the carcass 1 beyond the collar 14, said member 16 including a protecting cup 162 extending over a limited arcuate sector of a circle between free terminal edges. A further member 17 forming part of the shield is constituted by a cup 171 extending over an angular sector forming the complement of the angular sector defined by the cup 162, the sum of the angles defined by said sectors being equal to 360; the outer diameter 172 of the cup 17l is equal to the inner diameter of the cup 162. The shield members 16 and 17 are assembled as provided by their fitting or setting on the same ring 18 including an outer collar. Means such as a ball 19 subjected to the thrust of a spring 20 define the relative angular positioning of the cups 162 and 171 during use, so that they move from one splinter-proof shape to another Without any dismantling being required.

The shield system constituted by the members 16 and 17 is held longitudinally on the carcass 1 through the agency of a collapsible abutment rod 21 (FIG. 4) extending through the front end of said carcass, while it is urged rearwardly by a coil spring 21. Said abutment rod 21 includes a head 211 extending beyond the outer bearing 15 of the carcass, so as to form au abutment for the 4 ring 18 rigid with the shield members 16 and 17. The rod head 211 is provided with a flat longitudinal surface 212 which allows, upon rotation of the abutment rod 21, collapsing the head 211 onto the bearing surface 15 so aS to allow -dismantling or re-assembling the splinter-proof shield. A ball projecting beyond the end of the carcass 1 cooperates with impressions formed underneath the head 211so as to ensure the accurate positioning of the latter.

The cocking slider 23 is made of two parts and its front part 231 rigid with the muzzle 24 of the gun is associated with a compressionally acting return spring 25` centered with reference to the front section 3 of the gun. The adjacent ends of the parts 23 and 231 of the slider are adapted to be interconnected by mere cooperating hook-shaped sections 232 so as to be rigidly interconnected only for the two longitudinal directions whereas if the front slider part 231 is not held in position by the splinter proof shield, said front part disengages automatically the rear part 23 of the slider dropping under its own weight, whereby the cocking of the pistol is prevented.

On the other hand, a safety lever 26 is pivotally carried between the bosses 1'l of the carcass 1 while a spring 27 urges permanently the front end of said lever 26 into its position for which it abuts against the step 233 of the cocking slider which prevents any shifting of the slider which might lead to a cocking of the pistol. The pistol can actually be cocked only after the lever 26 has been released by hand through a pivotal movement thereof and consequently both hands of the operator serve for holding the pistol and pressing on the trigger and for releasing the slider through a pivotal movement of the lever 26 respectively.

It is also possible to associate the rotary movement of the collar 14 with safety means preventing any possible ring whenever the front section 3 of the gun is out of its uidtight locked position with reference to the rear gun section 6, which condition is vital. To this end, to the front part 231 of the pistol-cocking slider 23 is secured a stud 27' which forms a projection engaging a notch 142 cut over an arc extending within the thickness of the collar 14, while a second notch 143 in the latter forms a lateral extension for said notch 142 but only within a smaller fraction of the collar thickness, so as to form a step 144 against which the stud 27' is adapted to abut. It should be remarked as a matter of fact that according to the angular setting of the movable collar 14, the stud 27 engages either the deeper notch 142 or the shallow notch 143.

When the stud 27' on the cocking slider engages the deeper notch 142, said slider is allowed to move transversely, so that a cocking and firing of the pistol are possible. For such a position of the stud 27', the collar 14 liesfin the angular position for which it locks the front section 3 of the gun in a position for which the tiring can be executed under optimum conditions of safety. If in contradistinction the rear section 6 of the gun is not locked through an axial bearing between it and the front section 3 as a consequence of the operator having neglected to make the collar 1-4 rock, the shallower notch 143 provides for an abutment of the stop 27 which prevents any translational movement of the cocking slider. Thus, it is impossible to cock and lire the pistol.

The invention also covers means for locking the rear section 6 of the gun in its closed position during the cocking and firing of the pistol.

To this end, a stud 29 provided with a iiat lateral surface is rigid with the cocking slider 23 and passes through a longitudinal groove 18 formed in the carcass 1. The inner end of said centering stud 29 engages a recess 61 provided with ilat lateral sides at the upper end of the gun section 6 and when the slider 23 recedes, said centering stud 29 enters a groove 65 of a corresponding crosssectional shape so as to lock the section 6 and prevents it from moving outwardly through a pivotal movement.

The rea-r end of the cocking slider 23 is provided with an axial slot 234 across which is pivotally secured at 235 a sear 30 urged constantly in a clockwise direction by a spring 31. A nose 301 on the sear 30 cooperates with the shoulder 321 on the striker rod 32. A trigger 33 housed within the axial slot 234 is pivotally carried at 331 inside the casing 1, so as to cooperate through its nose 332 with a corresponding projection 302 on the sear 30 when the slider 23 is urged rearwardly so as to make said sear rock and constrain the striker to operate.

It should be remarked that within the thickness of the trigger 33 there is inserted a push member 34 projecting beyond the handle of the carcass 1 and pivotally secured to the sear through a spindle 341. Said push member 34 engages permanently the lower end of the slider 23 under the action of the thrust exerted by the return spring 35 on the trigger 33. At the end of its return stroke the trigger 33 abuts against the lower surface of the slider 2-3 through the agency of the transverse stud 36 bearing against the lower surface of the slider 23.

The striker rod 32 slides within a longitudinal opening extending through the body or carcass and is urged forwardly by the thr-ust exerted by the spring 37 which has been compressed at the moment of the cocking of the pistol so that its pressure is applied against the shoulder 321 on the slider rod with the interposition of a ring 38 the shifting of which is limited by a shoulder 19 on the carcass 1, the striker rod 32 continuing its progression under the action of inertia during the firing.

The rear end of the thrust-exerting spring 37 abuts against a plug 39 held inside the carcass 1 by a transverse spindle 40 engaging also a at longitudinal surface 322 formed on the striker rod 32 thereby to ensure the longitudinal guiding of the latter during its sliding movement.

A weaker spring 41 is fitted in the carcass 1 to the front of the shoulder 321 on the striker rod, so as to reliably ensure the rearward movement of the striker rod 32 over a very short distance, after it has struck the cartridge carrier. The conical tip of the striker rod 32 passes through a correspondingly shaped opening formed in the plug 42 fitted in a recess :formed in the carcass in registry with the cylindrical chamber 12 of the latter.

The interest of such a single barrelled plugging pistol is certain since it ensures through its gun including two associated sections an easy loading and extracting while its use is absolutely safe.

Obviously and as apparent from the preceding disclosure, the invention is by no means limited to the applications thereof and to the embodiments of its different parts described hereinabove and it covers all the modifications thereof falling within the scope of the accompanying claims.

What I claim is:

1. A plugging pistol adapted to ire a cartridge carried by a cartridge carrier comprising a casing defining a cylindrical chamber with an open front end, an arcuate lateral opening adjacent said chamber along the rear thereof and a coaxial channel opening into the rear end of the chamber and in turn open at the rear end thereof, a gun structure carried in said chamber and including a front section threadedly engaged with the casing at the front open end of said chamber, and a rear section independent of the front section, a collar rotatably encircling said casing and coupled with the front gun section to rotate and axially shift the latter between a rear operative position in abutting engagement with the rear section and a front inoperative position spaced from the rear section, a ap rigid with the rear section and pivotally secured to the casing for movement about an axis parallel with the axis of the cylindrical chamber between an operative position in which the ap closes the lateral opening in the chamber and positions the rear gun section in registry with the front section and an inoperative position in which the flap uncovers said lateral opening and shifts the rear gun section outside the body into a cartridge carrier loading and extracting position, a striker in said channel, a cooking slider adapted to slide longitudinally in said casing to an operative position to cock the striker, trigger means for releasing the cocked striker, said slider including a stud engaging the rear gun section upon setting of the cooking slider in its operative position to hold said rear gun section in its operative position, an extracting ring surrounding the rear section of the ,gun structure and adapted to slide longitudinally of the latter and a lever rigid with said ring and pivotally carried by the flap both to control the position of the latter and to shift said ring between a front inoperative position and a rear operative position, said ring in the rear operative position causing extraction of the cartridge carrier out of the rear gun section.

2. In a plugging pistol as claimed in claim 1, the provision of a cup-shaped splinter shield extending coaxially at the front of the casing and including two arcuate parts extending over angles the sum of which is equal to 360 and means controlling the relative angular position of said parts.

3. In a plugging pistol as claimed in claim 1, wherein said extracting ring has a longitudinal slot, a stud on the rear section of the gun structure engaging said slot in the ring to allow the latter to slide longitudinally of said rear section, an arcuate collar rigid with the inside of the ring and engaging the rear end of the rear gun section, said collar having an underside which engages the rear end of the cartridge carrier Such that with the ring in the rear operative position the ring collar provides for the extraction of the cartridge carrier out of the rear gun sectlon.

4. A plugging pistol as claimed in claim 1, wherein the front gun section is longitudinally corrugated and the `casing is provided with arcuate slots for the exhaust of the burnt gases produced by the cartridge, said pistol comprising furthermore an outer control handle rigid with the collar and an inner projection rigid with lthe collar and engaging through one of said slots a corrugation at the periphery of the front gun section.

5. A plugging pistol as claimed in claim 1, comprising a muzzle for the gun structure, a spring coaxial with the gun structure and carrying said muzzle coaxially with the gun structure, a front extension of the cooking slider rigid with the muzzle and engaging releasably said cooking slider and a stud rigid with the outer surface of said extension the collar being provided inwardly with a notch adapted to be engaged by the stud on the extension of the cooking slider when the collar is in its operative angular position so as to release the stud and allow a longitudinal shifting of the cooking slider into its operative position, said stud on the extension engaging the inner surface of the collar when the collar is out of its operative position to prevent said longitudinal shifting.

6. In a plugging pistol as claimed in claim 1, the provision of a cup-shaped splinter shield extending coaxially at the front of the casing and including two arcuate parts extending over angles the sum of which is equal to 360 and means controlling the relative angular position of said parts, a muzzle for the gun structure, a spring coaxial with the gun structure and carrying said muzzle coaxially with the gun structure, a front 'extension of the cocking slider rigid withithe muzzle engaging releasably said eocking slider and held by the inner periphery of the shield in operative relationship with the cocking slider.

7. In a plugging pistol as claimed in claim 1, the provision of a safety lever pivotally secured to the outer surface of the casing adapted to engage the cooking slider to prevent operation thereof and a spring urging said lever into its slider-engaging position..

8. A plugging pistol as claimed in claim 1, comprising a shoulder rigid with the striker, a rearwardly facing step in the channel, a plug closing the opening at the rear end of the channel, a ring surrounding the striker to the rear of its shoulder and adapted to abut against said step, a

spring inserted between the plug and the ring to urge the striker forwardly towards the cartridge carrier through the agency of said ring upon operation of the trigger means and a weaker spring engaging the front surface of the collar on the striker to urge the latter rearwardly after its forward thrust.

9. A plugging pistol as claimed in claim 1, wherein the trigger system includes a sear engaging the striker, a trigger pivotally secured to the body and adapted when the cocking slider is in its operative position to release the Sear and an independent pusher member pivotally secured to the trigger and controlling the latter and a spring urging the trigger away from the sear and the pusher member against the outer surface of the slider adjacent its rear end.

10. In a plugging pistol as claimed in claim 1, the provision of a cup-shaped splinter shield extending coaxially at the front of the casing and including two arcuate parts extending over angles the sum of which is equal to* 360, means controlling the relative angular position of said parts, a rod revolvably carried by the front end of the casing and including a head part of which is cut off, a ring secured to both parts of the shield and held fast between the head and the rod and the casing for a predetermined angular position of the rod for which the out off part of the head lies outside the ring and a spring urging said head towards the casing.

References Cited UNITED STATES PATENTS GRANVILLE Y. CUSTER, Primary Examiner 

